with a mixing parameter \(\epsilon \)  determined via the loop integral \(\epsilon =\frac{2}{f_\pi ^2}\int \frac{d^3k}{2\pi ^3\omega _k}f^{\pi }(\omega _k;T)\)  (\(\omega \)  is on-shell pion energy).
For \(\epsilon =1/2\)  (\(T=T_{\mathrm {pc}}\) ) vector and axial-vector spectral distributions completely overlaps signaling chiral-symmetry restoration (see Fig.REF ).
For \(\epsilon <1/2\)  the axial admixture fills the dip in the the \(1-1.5\)   G\(e\) V/\(c^{2}\) mass region.
More elaborate considerations including finite pion mass and momentum in the axial vector correlator and a non-vanishing pion chemical potential were worked out in [1]}, [2]}.
